Disorders of Gut-brain Interaction

The purpose of this research is to identify the concentration of mannitol solution (a type of sugar alcohol) that will generate a range of symptoms in individuals without Disorders of Gut Brain Interaction (DGBI) to establish the normative range of responses to small bowel (SB) distension.

Test of efficacy and cost-effectiveness of the iACTforDGBI intervention vs an active control group (DGBI School)

Gastroesophageal reflux disease (GERD) is a common gastrointestinal disorder, with around 80% of patients experiencing nighttime symptoms. The prolonged nighttime reflux increases esophageal acid exposure, leading to complications like erosive esophagitis and extra-esophageal symptoms such as asthma and chronic cough. These symptoms disrupt sleep and affect daytime work and quality of life. Diet significantly influences GERD; high-fat foods, spicy foods, caffeine, carbonated beverages, and fermentable oligosaccharides disaccharides monosaccharides and polyols (FODMAPs) can worsen symptoms by lowering the pressure of the lower esophageal sphincter or delaying gastric emptying. Eating before bed or lying down immediately after meals can also aggravate symptoms. Treatment typically includes weight loss, bed elevation, smoking and alcohol cessation, avoiding meals before bedtime, and certain food restrictions. However, most dietary studies are observational, and there is limited evidence from randomized controlled trials. Proton pump inhibitors are standard treatments, but about 40% of patients do not achieve satisfactory symptom relief after treatment. Many of these patients suffer from disorders of gut-brain axis interaction (DGBI), characterized by visceral hypersensitivity and heightened esophageal vigilance. Additionally, these patients often have comorbid functional gastrointestinal disorders, increasing diagnostic complexity and leading to poor treatment outcomes. The interaction between visceral hypersensitivity, psychological distress, and central sensitization in GERD patients with functional gastrointestinal disorders remains unclear. This study aims to explore GERD symptoms and their influencing factors from multiple perspectives and propose non-pharmacological treatment strategies. The research focuses on nighttime reflux symptoms, dietary interventions, and the interaction between functional gastrointestinal disorders and GERD, providing empirical support to improve patients' symptoms and quality of life. The results of this study will help clarify the pathophysiological mechanisms related to GERD, esophageal DGBI, and functional gastrointestinal disorders. Additionally, the research findings will provide effective treatment strategies for patients with refractory reflux and DGBI in clinical settings.

This single-site, open-label pilot study will evaluate transcutaneous auricular neurostimulation using the Sparrow Link device as a treatment for adolescents aged 12 to 18 years with abdominal pain related to disorders of gut-brain interaction. Up to 30 participants will be enrolled, with a goal of 20 completing the study. Participants will use the device for at least one hour daily for 4 weeks and complete questionnaires through week 8. The study will assess adherence, retention, safety, and preliminary changes in abdominal pain, bowel symptoms, quality of life, and anxiety.

The purpose of the study is to compare the effectiveness of recorded gut-directed hypnosis to an educational recording in people with chronic problems in their gastrointestinal (GI) system. Patients who are hospitalized at Stanford Hospital for worsening pain and/or nausea will be considered for enrollment.

Disorders of Gut-Brain Interactions (DGBIs) significantly impact children globally, leading to reduced quality of life and increased healthcare utilization. Despite their prevalence, effective treatments for pediatric DGBIs remain limited. Acupuncture, though commonly used in clinical practice and supported by adult data, lacks robust empirical evidence in pediatric populations. This study addresses this critical gap. The primary objective is to assess the efficacy of acupuncture in reducing symptom severity in pediatric patients with DGBIs. Key secondary objectives include evaluating improvements in quality of life, functional disability, and mental health outcomes. This is a parallel-group, randomized, placebo sham-controlled, participant-blind clinical trial. The study is being conducted in an outpatient pediatric referral center. A total of 96 participants, aged 8-17 years, meeting eligibility criteria for DGBIs will be enrolled. Participants must be medically stable and meet protocol-defined inclusion/exclusion criteria. Participants will be randomly assigned to receive either acupuncture or sham acupuncture, alongside standard care. Treatments will occur over a predefined protocol period. Data will be collected at baseline, during treatment, and at specified post-treatment intervals. The primary outcomes will evaluate changes in pain intensity and frequency. Secondary outcomes will include assessments of pain resolution, quality of life, functional disability, and mental health. Statistical analyses will employ rigorous methodologies to ensure reliability and validity of findings.